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經(jīng)常用，先放這里，用的時候過來拿！<%@page import="java.net.*,java.io.*"%><%!public boolean saveUrlAs(String photoUrl, String fileName) {//此方法只能用戶HTTP協(xié)議try {URL url = new URL(photoUrl);HttpURLConnection connection = (HttpURLConnection) url.openConnection();DataInputStream in = new DataInputStream(connection.getInputStream());DataOutputStream out = new DataOutputStream(new FileOutputStream(fileName));byte[] buffer = new byte[4096];int count = 0;while ((count = in.read(buffer)) > 0) {out.write(buffer, 0, count);}out.close();in.close();return true;}catch (Exception e) {return false;}}public String getDocumentAt(String urlString) {//此方法兼容HTTP和FTP協(xié)議StringBuffer document = new StringBuffer();try {URL url = new URL(urlString);URLConnection conn = url.openConnection();BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));String line = null;while ( (line = reader.readLine()) != null) {document.append(line + "\n");}reader.close();}catch (MalformedURLException e) {System.out.println("Unable to connect to URL: " + urlString);}catch (IOException e) {System.out.println("IOException when connecting to URL: " + urlString);}return document.toString();}%><%//測試String photoUrl = "http://ad4.sina.com.cn/200601/12/43932_750450.jpg";String fileName = photoUrl.substring(photoUrl.lastIndexOf("/"));String filePath = "d:/ghost/";boolean flag = saveUrlAs(photoUrl, filePath + fileName);out.println("Run ok!\n
Get URL file " + flag);%>

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